Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b82ff9f10e20b6d…

MALICIOUS

PDF

93.3 KB Created: 2021-03-16 22:05:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf9eeb02c2ac139a228736a93057a94c SHA-1: a10b90ac87d75f2714ac701d1e5a98f070297d64 SHA-256: 1b82ff9f10e20b6daf915e0a976c9f3b1dc1434ec35f4e23a25d34fbfe32e68f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a secondary payload or redirect to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'Ishida scales manual', aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://soxebez.ru/wix?keyword=ishida+scales+manual
    • https://cdn.sqhk.co/gesimefav/jeILGzq/pimuluru.pdf
    • https://cdn-cms.f-static.net/uploads/4497079/normal_601aa58055ddb.pdf
    • https://static.s123-cdn-static.com/uploads/4388833/normal_5ff24b2de9346.pdf
    • https://cdn-cms.f-static.net/uploads/4503309/normal_60490f85bf82a.pdf
    • https://cdn-cms.f-static.net/uploads/4476147/normal_60136a10eeaff.pdf
    • https://cdn.sqhk.co/supekokabe/fDFjiaU/jakasojedebodeniver.pdf
    • https://cdn-cms.f-static.net/uploads/4495985/normal_6049e2f4781ac.pdf
    • https://cdn-cms.f-static.net/uploads/4383582/normal_604a9b650207f.pdf
    • https://cdn-cms.f-static.net/uploads/4456391/normal_601db670c3cd9.pdf
    • https://cdn.sqhk.co/siwosisagi/lKhRJio/muperijaxakuvonar.pdf
    • https://cdn-cms.f-static.net/uploads/4477137/normal_604b6cf33cd46.pdf
    • https://cdn.sqhk.co/sobexofap/xcXjAhh/ppsspp_gold_psp_emulator_apk_data.pdf
    • https://static.s123-cdn-static.com/uploads/4365563/normal_6007a51414965.pdf
    • https://cdn-cms.f-static.net/uploads/4464319/normal_604e128dbfc3c.pdf
    • https://cdn-cms.f-static.net/uploads/4380545/normal_6046c51ecf748.pdf
    • https://static.s123-cdn-static.com/uploads/4462344/normal_5ff3a8d06ee9e.pdf
    • https://cdn.sqhk.co/ripalufix/EijEpij/clash_of_clans_base_layout_app_download.pdf
    • https://cdn-cms.f-static.net/uploads/4482188/normal_600f657d2b8f2.pdf
    • https://static.s123-cdn-static.com/uploads/4494452/normal_5fefff2cd2f7b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/joterige/bakusixutum.pdf
    • https://s3.amazonaws.com/sitok/baby_one_more_time_song_320kbps.pdf
    • https://s3.amazonaws.com/jagux/xamowagipupoxejuxavejefi.pdf
    • https://s3.amazonaws.com/kiguteperilodu/seletega.pdf
    • https://s3.amazonaws.com/jidosatikim/23997382976.pdf
    • https://s3.amazonaws.com/vawoginele/49808389032.pdf
    • https://s3.amazonaws.com/pesetufavo/chocolate_odia_movie_hd_video_songs.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000130ad.bin
123b1e7b28a8f264b410b3339086733ffc2b9c3994e18cfd0c8fc387ab366f8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130AD 5020 bytes
font_01_sfnt_off00014194.bin
ce03346c77602d6042a8aef9122c45c0ccd7e75b785b8d83eeca547753e66bdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14194 11080 bytes

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